Siege of Hasedo

The Siege of Hasedo occurred from 19 October to 4 November 1600 during the Sengoku period. The forces of Kagekatsu Uesugi, who supported Mitsunari Ishida, failed in their attempt to capture Hasedo Castle during his campaign to conquer Tohoku, with the pro-Tokugawa forces of Yoshiaki Mogami and Masamune Date repelling the assault. The Uesugi army withdrew after news arrived of Mitsunari's defeat at the Battle of Sekigahara.

While dealing with the threat of Mitsunari's army in the west, Ieyasu feared an attack from the Uesugi clan in the east, and he ordered his generals to distract them. After failing in his efforts to trap Masamune Date's army between his and Mitsunari's the Uesugi general Kanetsugu Naoe besieged the Mogami clan at Hasedo Castle. Masamune broke through Keiji Maeda's forces at the central garrison, but more Uesugi reinforcements arrived to continue the siege of the castle. Kanetsugu decided to head for the front lines, leaving the defense of the north garrison to Kagekatsu; Date's general Magoichi Saika decided to head for the north garrison as Masamune relieved his uncle in Hasedo Castle. However, Kagekatsu argued with Kanetsugu, and it was he who ultimately advanced on Hasedo. Masamune led the relief force to the castle, where they defeated Kagekatsu, and they also defeated the Uesugi generals Chikanori Suibara and Kagetsugu Amakasu as they attempted to penetrate the castle's defenses. Masamune pushed on towards the Uesugi main camp, and Kanetsugu made preparations to withdraw to the southwest. Keiji Maeda reappeared in an attempt to guard Kanetsugu's retreat, but Masamune reached both of them at the main camp. He first defeated Keiji, and he then proceeded to defeat Kanetsugu before he could escape. The Uesugi army was forced to withdraw, and Naoe called a full retreat to Yonezawa after hearing of Ieyasu's victory at the Battle of Sekigahara.